The vertices of a trapezoid are at (-3, -3), (5,-3), (2, 3), and (-2, 3).
What is the area of the trapezoid?

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

The product of two negative rational numbers is always zero sometimes zero never zero

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01